On Sun, May 04, 2014 at 01:03:32PM +0200, Christoph Hellwig wrote:
> Various filesystems don't bother checking for a NULL ACL in
> posix_acl_equiv_mode, and thus can dereference a NULL pointer when it
> gets passed one. This usually happens from the NFS server, as the ACL tools
> never pass a NULL ACL, but instead of one representing the mode bits.
> 
> Instead of adding boilerplat to all filesystems put this check into one place,
> which will allow us to remove the check from other filesystems as well later
> on.
> 
> Signed-off-by: Christoph Hellwig <[email protected]>
> Reported-by: Ben Greear <[email protected]>
> Reported-by: Marco Munderloh <[email protected]>,
> Cc: Chuck Lever <[email protected]>
> Cc: [email protected]

Reviewed-by: Matthew Wilcox <[email protected]>
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